'use strict'

class content {

  constructor () {
    //param默认就是/:id，若要改变路由，则可以设置此属性，比如设置为/:name
    //this.param = '/:id'
  }
  __mid(){
    return[
      {
       name:'token-verify',
       path:['post','delete']
      }
    ]
  }

  //以下方法，若不需要，要去掉，避免无意义的路由。

  //获取资源具体内容
  //对应的路由 GET/content:id
  async get (c) {
    let id=c.param.id
    let sqltext='SELECT id,detail,title,update_time'+'FROM content WHERE id=$1';
    let r=await c.service.psql.query(sqltext,[id])
    if(r.rowCount===0)
        return c.status(404).send('not found')
     c.send(r.rows[0])
  }

  //创建资源
  //对应的路由POST/content
  async post (c) {
    try{
      //c.body 是提交的请求体数据
      let data=JSON.parse(c.body)
      let sqltext= `INSERT INTO content`
      +`(id,detail,title,add_time,update_time)`
      +'VALUES($1,$2,$3,$4,$5)'
      //随机数转成16进制字符串并去掉前两位，字符串作为ID
      let id=Math.random().toString(16).substring(2)
      let tm=Date.now()
      
      let r=await c.service.psql.query(sqltext,[id,data.detail,data.title,tm, tm])
      if(r.rowCount===0){
          return c.status(500).send('failed')
      }
      c.send(id)
  }catch(err){
      console.error(err)
      c.status(400).send('bad data')
  }
  }

  //更新资源
  //对应的路由 PUT/content/:id
  async put (c) {

  }

  //获取列表
  //对应的路由GET/content
  async list (c) {
   
      let sqltext=`SELECT id,title,update_time FROM content`
      let r=await c.service.psql.query(sqltext)
      c.send(r.rows)
  }

  //删除资源
  //对应路由 DELETE/content/:id
  async delete (c) {
    let r=await c.service.psql.query(`DELETE FROM content WHERE id=$1`,
    [c.param.id])
    c.send({
        count:r.rowCount
    })
  }

}

module.exports = content
